Induction apparatus.



PATENTE-D DEG. 13, 1964.

M. CHRISTOPH.

INDUCTIGN APARATUS.

APPLICATION FILED HAY 15, 190s. BBKBWED 00T 21. 1904.

NO MODEL.

VMW -l l i r .k www..

NO. 777,496. Patented December 13, 1904.

UNITED STATES PATENT OFFICE.

GEORGE M. CHRISTOPH, OF CHICAGO, ILLINOIS, ASSIGNOR TO WIESIERN X-RAY AND COIL COMPANY, A CORPORATION OF ILLINOIS.

INDUCTION APPARATUS.

SPECIFICATION forming part of Letters Patent No. 777,496, dated December 13, 1904.

Application filed May l5, 1903. Renewed October 2l, 1904. Serial No. 229,387. (No model.)

T @ZZ Tf1/hm mQ/.Z/ 007%0677@ ranged between the primary and secondary 50 Be it known that I, GEORGE M. CI-InIsTorII, coils of the apparatus. Such sleeve extends a citizen of the United States of America, and the entire length of the housing l, with its a resident of Chicago, in the county of Cook ends projecting through orifices in the vertiand State of Illinois, have invented certain cal end walls of said housing, as shown.

new and useful Improvements in Induction 6 is the secondary coil, consisting of the 55 Apparatus, of which the following is a speciusual series of individual bobbins having' end iication. heads 7, with the insulated windings thereof This invention relates more especially to connected in series. The series of hobbins IO that class of induction-coils employed in prohave the usual separated relation and are producing high-tension currents for X-ray and vided with central orifices for the passage or 6o other like uses, and has for its object to proreception of the sleeve aforesaid. and such vide a simple, durable, and efHcient construeorifices haveagreater diameter than the sleeve, tion and arrangement of parts affording a so as to leave an annular intervening space Y I5 high degree of insulation for the different for the reception of a part of the semisolid windings of the apparatus and an avoidance insulating mass with which the interior of 65 of any sparking or leaping of the induced the housing is filled when the parts of the apcurrents to near-by conductors, due to iiiiperparatus are completely assembled.

fect or defective insulation of the secondary 8 represents a series of wedges or distance- 2o windings of the apparatus. pieces inserted between the periphery of the In the accompanying drawings, illustrative sleeve 5 and the inner walls of the central ori- 70 of the present invention, Figure l is a view, iices of the secondary coils 6 to maintain a partly in side elevation and partly in longipositive concentric relation of such parts. tudinal section, of an induction apparatus In the present invention the secondary coil embodying the present invention. Fig. 2 is 6 is suspended or supported wholly from the a detail transverse section at line a; a', Fig. l. upper end of the housing l by means of sup- 75 Fig. 3 is a detail transverse section at line rv' porting-recesses 9 in the upper ends of the ./r, Fig. l. Fig. 4L is a diagram view of the vertical walls of such housing'. In the conconnection of the primary coil. Fig. 5 is a struction shown in Figs. I and 2 of the draw- 3o detail longitudinal section of a modilication. ings, l() represents longitudinal supporting- Fig. 6 is a detail transverse section of a modirods, threaded through orifices in the respec- 8O lication. tive end heads 7 of the series of bobbins com- Similar numerals of reference indicate like prising the secondary coil 6, with the ends of parts in the several views. said rods resting in the recesses 9 aforesaid 3 5 Referring to the drawings, l represents the to constitute the described support of the secusual housing or casing formed with the usual ondary coil within the housing' l, the spaced S 5 chambered base 2 for containing the electrical relation of the series of bobbins being maincondenser generally employed in connection tained by pins 1l passing'transversely through with the present class of induction apparatus. said rods at the sides of the end heads 7 of l 40 The housing l will preferably have the usual such bobbins. In Fig. 6 of the drawings the rectangular box-like form shown and be proend heads 7 are provided with lateral top eX- 90 vided with a removable cover 3 for ready actension l2, adapted to engage in supportingcess to the parts contained within the housing. recesses 9 in the upper ends of the side walls l is the primary coils. consisting of the of the housing l. In either case the lower usual series of individual windings surroundends of the series of bobbins are supported a ing the usual soft-iron core, and such winddistance away from the bottom of the interior ings are connected to bindingor terminal posts of the housing, and a clear space is formed at hereinafter described. such point for the receptionof an uninteris a sleeve of high-insulating material arrupted layer of the semisolid insulating niaterial with which the interior of the housing' is filled to afford increased insulation to the secondary coil.

13 represents supplementary sleeves of insulating material surrounding the respective ends ofthe insulating-sleeve 5 aforesaid. Such sleeves 13 pass throug'h the orifices aforesaid in the end walls of the housing 1 and are provided with flanges 14 on their inner ends, which have abutment ag'ainst the inner faces of such end walls, as shown. The diameter of the sleeve 5, supplementary sleeve 13, and orifices aforesaid in the end walls of the housing 1 are so proportioned that annular spaces are left between such parts for the reception ofa portion of the semisolid insulating' material which fills the interior of the housing', as before set forth.

15 represents annular cup-pieces screwing upon the outer ends of the supplementary sleeves 13 and having bearing against the outer faces of the end walls of the housing' 1, as shown. The arrangement is such that with the cup-pieces screwed into place a tight joint will be formed around the orifices aforesaid in the end walls of the housing' and the supplementary sleeves 13 clamped securely in proper concentric relation to the main insulating-sleeve 5.

16 represents interposed rubber gaskets for insuring a tight joint at the bearing-surface of the respective cup-pieces against the end walls of the housing.

17 represents end heads provided with annular screw-threaded necks, which screw into the outer ends of the supplementary sleeves 13 to close such ends and at the same time secure the primary coil 4 and the insulatingsleeve against longitudinal displacement.

18 is an annular packing-ring arranged near the outer end of each supplementary sleeve 13 to afford an abutment for the end of the screwthreaded neck aforesaid of the end head 17 to aord a tig'ht joint at such point when said head is screwed into place.

The interior of the annular pieces 15 in the present improvement form receiving-chambers for portions of the beforementioned semisolid material which fills the interior of the main housing, and in order to permit of 'a ready flow of such material into such chambers to fill the same the sides of the flanges 14 are cut away, as shown in Fig. 3, to expose portions of the annular space between the auxiliary sleeves 13 and the orifices in the end walls, such spaces in turn having communication with the chambers aforesaid of the cuppieces 15, as shown in Fig. 1 of the drawings.

19 is a vent-plug' in the upper part of each cup-piece 15 for venting the chambers in said cup-pieces during the fiow of insulating material into the same.

1n the modification shown in Fig. 5 of the drawings the end heads have direct bearing against the cup-pieces, and a single central bolt 20. which extends longitudinally through the apparatus, is adapted to draw the parts into proper position in an assemblage of the apparatus.

In the present invention the end heads 17 will be formed of any suitable insulating material and will carry a series of binding-posts 21, corresponding' in number to the number of windings in the primary coil 4, and the arrangement is such that the binding-posts can be connected so as to place the primary windings in series in parallel or to cut out one or more of such windings as the judgment of the operator may direct.

Vith the described arrangement of hinding-posts above set forth the necessity of the usual wiring or metal work on the bottom board of the housing' 1 is avoided and a very perfect insulation attained at such point owing to such omission, as there are no near-by cou- O ductors to which the induced currents in the secondary coil can spark or leap.

Having thus fully described my said invention, what l claim as new, and desire to secure by Letters Patent, is-

1. In an induction apparatus, the combination of an inclosing housing' provided with supporting'-1'ecesses in the upper part of the vertical walls, a secondary coil consisting' of a series of bobbins the end heads of which have supporting connection with the recesses aforesaid, and a primary coil arranged centrally within the secondary coil.

2. In an induction apparatus, the combination of an inclosing' housing' provided with supportilig-recesses in the upper part of its vertical walls, a secondary coil consisting' of a series of bobbins the end heads of which have supporting connection with the recesses aforesaid the same comprising' longitudinal rods threaded through said end heads and resting' in said recesses, and a primary coil a1'- ranged centrally within the secondary coil.

3. In an induction apparatus, the combination of an inclosing' housing provided with supporting-recesses in the upper part of its vertical walls, a secondary coil consisting' of a series of bobbins the end heads of which have supporting' connection with the recesses aforesaid, a primary coil arranged centrally within the secondary coil and separated therefrom by an insulating-sleeve, and distanceblocks inserted between such insulating-sleeve and the bore of said bobbins to maintain concentric relation of the coils.

4. 1n an induction apparatus, the combination of an inelosing housing provided with orifices in its end walls, a secondary coil consisting of a series of bobbins arranged within said housing', a primary coil arranged centrally within the secondary coil, an insulating-sleeve arranged between the primary and secondary coils and projecting through the end-wall orifices aforesaid, annular cup-pieces arranged outside the orifices in the end walls TOO IIO

to form annular insulating-chambers, and means for clamping said cup-pieces in place.

-5. In an induction apparatus, the combination of' au inclosing housing provided with orifices in its end Walls, a secondary coil consisting of' a series of' Ybolobins arranged within said housing, a primary coil arranged centrally within the secondary coil, an insulating-sleeve arranged between the primary and secondary coils and projecting through the end-Wall orifices aforesaid, annular cup-pieces arranged outside the orifices in the end walls to form annular insulating chambers, end heads closing the outer ends of the cup-pieces and the insulating-sleeve, means for clamping the parts together, and a series of' terminal posts on said end heads having connection with the windings of' the primary coil.

6. In an induction apparatus, the combination yof an inclosing housing provided with orifices in its end walls, a secondary coil consisting of a series of' bobbins arranged Within said housing, a primary coil arranged centrally Within the secondary coil, an insulating-sleeve arranged between the primary and secondary coils and projecting through the end- Wall orifices aforesaid, supplementary sleeves projecting through said orifices and having flanged inner ends, annular cup-pieces attached to the outer ends of said supplementary sleeves, end heads closing the outer ends of' said supplementary sleeves, and means for clamping the parts in place.

7. In an induction apparatus, the combination of an inclosing housing provided with orifices in its end walls, a secondary coil consisting of' a series of' hobbins arranged Within said housing, a primary coil arranged centrally Within the secondary coil, an insulating-sleeve arranged between the primary and secondary coils and projecting' through the endwall orifices aforesaid, supplementary sleeves projecting through said orifices and having iianged inner ends, annular cup-pieces attached to the outer ends of' said supplementary sleeves, and heads closing the outer ends of' said supplementary sleeves, means for clamping the parts in place, and a series of' terminal posts on the end heads having connection with the windings of' the primary coil.

Signed at Chicago, Illinois, this 9th day of' May, 1903.

GEORGE M. CHRISTOPH. Titnessesz ROBERT BURNS, M. H. HOLMES. 

